Metal blades for Multimaster

Does anyone make a decent metal blade for Multimaster, et al? Fein and the look-alikes sell a "wood/metal" blade that will cut nails sort of OK, but which dulls very rapidly when faced with something like a deck screw. Is there anything better?

Of all the preposterous assumptions of humanity over humanity, nothing exceeds most of the criticisms made on the habits of the poor by the well-housed, well-warmed, and well-fed. --Herman Melville

I've not found the prices to (post #214399, reply #6 of 10)

I've not found the prices to be outrageous, considering the way the unit is typically used. (Though I will admith they ain't cheap, as a rule.) If you were cutting lumber with it it would be a different matter, but the MM is typically used in situations where you spend far more time figuring out what to do than cutting.

Of all the preposterous assumptions of humanity over humanity, nothing exceeds most of the criticisms made on the habits of the poor by the well-housed, well-warmed, and well-fed. --Herman Melville